FORMING ROTARY CUTTING TOOL
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United States of America Patent
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Issued Date -
Dec 17, 2015
app pub date -
Jan 20, 2014
filing date -
Feb 28, 2013
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Abstract
A forming rotary cutting tool (1) in the shape of a Christmas tree, provided with a main body (10) and cutting blades (20a, 20b) provided to the outer periphery of the main body (10), the cutting blades (20a, 20b) alternately having a plurality of convex parts (21a1-21a4, 21b1-21b4) and a plurality of concave parts (22a1-22a3, 22b1-22b3); wherein within a predetermined range from a tool tip part (30), the cutting blades (20a, 20b) are integrated cutting blades (40a, 40b) that are formed integrally with the main body (10), and outside of the predetermined range, and the cutting blades (20a, 20b) are attached cutting blades (50a, 50b) that are formed separately from the main body (10) and attached to the main body (10).
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